基本释义:

空心钻

网络释义

1)Hollow drill,空心钻

2)hollow boring bit,空心钻头

3)hollow rod,空心钻杆

4)core drill,岩芯钻机;空心钻

5)hollow-rod drilling,空心钻杆钻进

6)hollow "primary-secondary" driller,空心"子母"钻

用法和例句

Applying the hollow "primary-secondary" driller to expand the holes for reducing the peripheral frictional resistance of the internal drive pipe can make the internal drive pipe submerge to the position of the broken pile.

应用空心“子母”钻对桩基进行扩孔,通过减小内护筒周边的摩擦阻力,可使内护筒顺利下沉到断桩位置。